Hi,
we are MEP contractors in Abu Dhabi, working on LEED project.
In specifications all AHUs are given 2 sets of disposable filters, prefilter (panel) & main (bag) filter. We are going to use AHUs during construction. So we'll be using MERV 8 filter during construction & will replace them by MERV 13 before handing over.
Now, question is, do we use both pre & bag filters of MERV 8 during construction & then before occupancy MERV 13 ratings? It will add cost as good no. of AHUs will be used. Or can we use just one pre or bag filter of MERV 8 & 13 rating?
Thanks in advance
Amruta Kshemkalyani
Sustainability Consultant32 thumbs up
April 25, 2010 - 5:08 am
The previous question was a bit silly.
We are thinking of using MERV 8 or equivalent filter as pre filter & EU7, bag filter during construction.
& these filters to replace by EU4, pre filter & MERV 13 bag filter, just before occupancy.
Does it comply with IEQ c3.1?
Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11474 thumbs up
April 28, 2010 - 10:01 pm
Amruta, the requirement is to have a MERV 8 filter at "each return air grille" during construction. Would you be meeting this requirement? I am not familiar with how EU7 compares with MERV 8.
Amruta Kshemkalyani
Sustainability Consultant32 thumbs up
April 29, 2010 - 1:39 am
Thanks Tristan,
So if we use MERV 8 filteration media at each return air grille; then we can use any type of filters (pre & bag in this case) at AHU?
is it right?
One more question, grades of EU also give same dust spot efficiency & arrestance% as MERV.
So can we use EU filters instead of MERV? (As suppliers here, don't know much about MERVs)
But then how to write it down in LEED submittal, there is no column for MERV equivalent?
Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11474 thumbs up
April 29, 2010 - 11:12 am
Amruta, the requirement is for MERV 8 filters at each return grille, so I don't see any issue with doing that, and then using any type of filter on the AHU.I believe that EU and MERV testing protocols are different, so you can't just substitute then for each other. I think it would take a bit more research to better understand this and to be able to justify that.